Antec EarthWatts Platinum 550W Review & Specs

Antec EarthWatts Platinum 550W 80 PLUS Platinum EA-550

Antec EarthWatts Platinum 550W 80 PLUS Platinum EA-550

- Antec

★ ★ ★ ★ ★
(10 reviews)

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  • Antec's EarthWatts Platinum is one of the most efficient PSU series ever created. With an 80 PLUS® PLATINUM rating, the highest efficiency mark for power supplies, this PSU achieves up to 93% efficiency and gives you savings unheard of from other power supplies. By using the EA-550 Platinum, you can reduce your computer's power consumption by 25%. A 3 year Antec Quality warranty, a whisper-quiet 120mm DBB fan controlled by Antec's renowned Thermal Manager and CircuitShield™'s industry-leading 7 levels of protection make the EA-550 Platinum one of the best choices available. Get the power you need, save money and help protect the environment with Antec's EA-550 Platinum!

Specifications Overview

  • EA-550
  • EA-550 Platinum
Release Date September 2013

* First availability for purchase, it may not correspond to the actual market launch date.

Wattage 550W
Type ATX12V / EPS12V
Modular No
Efficiency 80+ Platinum
Output +5V@16A, +3.3V@16A, +12V1@30A, +12V2@30A, +12V3@30A, +12V4@30A, -12V@0.3A, +5VSB@3A
PCI-Express 6+2 Pin Connectors 2
PCI-Express 6 Pin Connectors 0
EPS Connectors 1
SATA Connectors 5
Molex Connectors 4
Length 139mm


  • 80PLUS Platinum
  • Low price for Platinum unit
  • Very quiet


  • Not modular
  • Voltage regulation could be better
  • 550W Continuous Power — Guaranteed 550W of Continuous Power from Antec
  • 80 PLUS® PLATINUM certified — Up to 93% efficient, to reduce your electricity bill
  • Save Energy and Money — Reduce your electricity bill by up to 25%!
  • AQ3 — Antec Quality 3 year warranty and lifetime global 24/7 support
  • 120 mm DBB Silence — Whisper-quiet high-quality double ball bearing fan with long lifetime
  • Thermal Manager — An advanced low voltage fan control for optimal heat & noise management
  • High Current Rails — 2 fully-protected High Current +12V rails with high load capabilities ensure maximum CPU & GPU compatibility
  • Multi PCI-E — 2 PCI-E connectors for multiple GPU support
  • CircuitShield™ — Over Current Protection (OCP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), Short Circuit Protection (SCP), Over Power Protection (OPP), Surge & Inrush Protection (SIP), No Load Operation (NLO) & Brown-Out Protection (BOP)
  • Japanese heavy-duty caps — High-performance Japanese capacitors ensure tightest DC stability and regulation
    - 1 x 24-pin
    - 1 x 8(4+4)-pin ATX12V/EPS12V
    - 2 x 8(6+2)-pin PCI-E
    - 4 x Molex
    - 5 x SATA
    - 1 x Floppy
    - Operating Temperature: 0°C — 50°C
    - Safety Approvals: UL, cUL, CB, CE, FCC, TÜV, BSMI, CCC, C-Tick, GOST-R, KCC
  • Net Weight: 4.2 lbs / 1.9 kg
  • Size:
    - 3.4" (H) x 5.9" (W) x 5.5" (D)
    - 86 mm (H) x 150 mm (W) x 140 mm (D)

Voltage Load
MAX Reg. OCP Set
Point Ripple &

  +5V   16A   ±5%   26A-35A 50mV


  ±5%   26A-35A 50mV
  +12V1   30A   ±5%   35A-45A 120mV
  +12V2   30A   ±5%   35A-45A 120mV
  +12V3   30A   ±5%   35A-45A 120mV
  +12V4   30A   ±10%   35A-45A 120mV
  -12V   0.3A   ±5%     150mV
  +5vsb   3A   ±5%     50mV

+5V and +3.3V combined max. output: 95W

+12V outputs combined max. output: 516W


Input Voltage   100~240VAC ±10%
Input frequency Range   50Hz ~ 60Hz
Efficiency   Up to 93%

Critic Reviews


Anche dal punto di vista qualitativo il prodotto risulta essere di tutto rispetto: siamo davanti ad un prodotto di elevata robustezza e cura costruttiva, le tensioni in uscita risultano essere molto stabili e con bassi livelli di ripple, con una...

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Excellent efficiency, but it's hard to excuse captive cables at this price...

Expert Reviews

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